﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using System.Windows.Forms;
using System.Data.SqlTypes;
using CinemaProject;

namespace CinemaDbLib
{
    public class ScheduleDB
    {
        private Connection connection;
        private MovieDB movieDB;
        private RoomDB roomDB;

        public ScheduleDB()
        {
            connection = new Connection();
            movieDB = new MovieDB();
            roomDB = new RoomDB();
        }

        public List<Schedule> getSchedules()
        {
            return where("");
        }

        public Schedule getScheduleById(int id)
        {
            return singleWhere("id = " + id);
        }

        public List<Schedule> getScheduleByMovieId(int id)
        {
            return where("movieId = " + id);
        }

        private Schedule singleWhere(String wClause)
        {
            Schedule schedule = null;

            string query = "SELECT * FROM XpSchedule WHERE " + wClause;
            connection.Open();
            SqlDataReader reader = connection.Read(query);

            if (reader.Read())
            {
                schedule = new Schedule();
                schedule.id = reader.GetInt32(0);
                schedule.time = reader.GetDateTime(1);
                schedule.movie = movieDB.getMovieById(reader.GetInt32(2));
                schedule.room = roomDB.getRoomById(reader.GetInt32(3));
                schedule.price = reader.GetDecimal(4);
            }

            reader.Close();
            connection.Close();

            return schedule;
        }

        private List<Schedule> where(String wClause)
        {
            List<Schedule> schedules = new List<Schedule>();
            string now = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            string query = "SELECT * FROM Schedule WHERE startingTime > '" + now + "'" + (wClause.Length > 0 ? " AND " + wClause : "") + " ORDER BY startingTime";
            connection.Open();
            SqlDataReader reader = connection.Read(query);
            while (reader.Read())
            {
                Schedule schedule = new Schedule();
                schedule.id = reader.GetInt32(0);
                schedule.time = reader.GetDateTime(1);
                schedule.movie = movieDB.getMovieById(reader.GetInt32(2));
                schedule.room = roomDB.getRoomById(reader.GetInt32(3));
                schedule.price = reader.GetDecimal(4);
                schedules.Add(schedule);
            }

            reader.Close();
            connection.Close();

            return schedules;
        }
    }
}
